Question

question 10 (multiple choice worth 2 points) (experimental probability mc) thirty students were surveyed about the number of siblings they have. their results were recorded and placed on a card face - down. determine p(not 3) when picking a random card. outcome 1 2 3 4 or more frequency 6 12 9 3 o 10% o 30% o 70% o 80%

Explanation:

Step1: Calculate total frequency

The total number of students surveyed is the sum of all frequencies. $6 + 12+9 + 3=30$.

Step2: Calculate frequency of not 3

The frequency of having 3 siblings is 9. The frequency of not having 3 siblings is $30 - 9=21$.

Step3: Calculate probability

The experimental - probability formula is $P(A)=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$. So, $P(\text{not }3)=\frac{21}{30}=0.7 = 70\%$.

Answer:

70%